Computer Science For class 10

Computer security                 1.     What do you mean by computer security? write the importance of computer security.     =               The protection of computer peripherals, data and program from its enemy heat, dust, fire, virus etc is known as computer security.   computer security is importance in order to prevent both hardware and software from being damaged ,corrupted or theft. 2.     What are the types of computer secu rity? =                 Computer security can be classified into two types they are:              i. Hardware security              ii. Software security 3.     What is hardware security? write any four measures to protect the computer hardware. =              Hardware security refers to the protection of computer and its peripherals from physical loss, damaged and theft. There are various ways to protect hardware:              i.   Regular maintenance              ii Dust free environment              iii Air condition syst

DBMS Class-10 a.Define the terms data and information with suitable examples. Ans              Data: Data is the set of row facts, symbols or unprocessed means of information collected from various sources which does not gives the proper meaning. Example:Ram,15,10,Butwal,Student Information: It is the meaningful information or desired output obtained after processing data which gives proper meaning.   Example: Ram is a 15 years boy reads in grade 10,butwal. b. What is Database? Write some example of databases. Ans. A database is the collection of related data records organized in such a way that its contents can easily be accessed, managed and updated Some example of databases are: i) Telephone directory       ii) Mark ledger    iii) Flight schedule etc. c. Write the advantages of computerized Database. Ans. The advantage of computerized databases are. ·        Computerized database allows storing large volume of data in a small device. ·        Co